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| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/msdosfs_iconv/@/dev/usb/usb_endian.h |
/* $FreeBSD: release/9.1.0/sys/dev/usb/usb_endian.h 196219 2009-08-14 20:03:53Z jhb $ */
/*
* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _USB_ENDIAN_H_
#define _USB_ENDIAN_H_
#include <sys/stdint.h>
#include <sys/endian.h>
/*
* Declare the basic USB record types. USB records have an alignment
* of 1 byte and are always packed.
*/
typedef uint8_t uByte;
typedef uint8_t uWord[2];
typedef uint8_t uDWord[4];
typedef uint8_t uQWord[8];
/*
* Define a set of macros that can get and set data independent of
* CPU endianness and CPU alignment requirements:
*/
#define UGETB(w) \
((w)[0])
#define UGETW(w) \
((w)[0] | \
(((uint16_t)((w)[1])) << 8))
#define UGETDW(w) \
((w)[0] | \
(((uint16_t)((w)[1])) << 8) | \
(((uint32_t)((w)[2])) << 16) | \
(((uint32_t)((w)[3])) << 24))
#define UGETQW(w) \
((w)[0] | \
(((uint16_t)((w)[1])) << 8) | \
(((uint32_t)((w)[2])) << 16) | \
(((uint32_t)((w)[3])) << 24) | \
(((uint64_t)((w)[4])) << 32) | \
(((uint64_t)((w)[5])) << 40) | \
(((uint64_t)((w)[6])) << 48) | \
(((uint64_t)((w)[7])) << 56))
#define USETB(w,v) do { \
(w)[0] = (uint8_t)(v); \
} while (0)
#define USETW(w,v) do { \
(w)[0] = (uint8_t)(v); \
(w)[1] = (uint8_t)((v) >> 8); \
} while (0)
#define USETDW(w,v) do { \
(w)[0] = (uint8_t)(v); \
(w)[1] = (uint8_t)((v) >> 8); \
(w)[2] = (uint8_t)((v) >> 16); \
(w)[3] = (uint8_t)((v) >> 24); \
} while (0)
#define USETQW(w,v) do { \
(w)[0] = (uint8_t)(v); \
(w)[1] = (uint8_t)((v) >> 8); \
(w)[2] = (uint8_t)((v) >> 16); \
(w)[3] = (uint8_t)((v) >> 24); \
(w)[4] = (uint8_t)((v) >> 32); \
(w)[5] = (uint8_t)((v) >> 40); \
(w)[6] = (uint8_t)((v) >> 48); \
(w)[7] = (uint8_t)((v) >> 56); \
} while (0)
#define USETW2(w,b1,b0) do { \
(w)[0] = (uint8_t)(b0); \
(w)[1] = (uint8_t)(b1); \
} while (0)
#define USETW4(w,b3,b2,b1,b0) do { \
(w)[0] = (uint8_t)(b0); \
(w)[1] = (uint8_t)(b1); \
(w)[2] = (uint8_t)(b2); \
(w)[3] = (uint8_t)(b3); \
} while (0)
#define USETW8(w,b7,b6,b5,b4,b3,b2,b1,b0) do { \
(w)[0] = (uint8_t)(b0); \
(w)[1] = (uint8_t)(b1); \
(w)[2] = (uint8_t)(b2); \
(w)[3] = (uint8_t)(b3); \
(w)[4] = (uint8_t)(b4); \
(w)[5] = (uint8_t)(b5); \
(w)[6] = (uint8_t)(b6); \
(w)[7] = (uint8_t)(b7); \
} while (0)
#endif /* _USB_ENDIAN_H_ */